Foueths to daniel batjgh and edwin p



(No Model.)

- B.TERNE. PROCESS OF TREATING TANK WATBRSOP SLAUGHTER HOUSES.

' Patehted July s1, 1888.

WI TNESSE/S F v INVENT0R: @3 W 2 a/Hmwyl N. PETERS. PM UMIBPEIO Washington, D. C-

- UNITED STATES,

PATENT OFEIcE.

BRUNO TERNE, E PHILADELPHIA, PENNSYLVANIA, ASSIGNOR or THREE- FOURTHS TO DANIEL BAUGH AND EDWIN RBAUGH, or sAME PLACE.

PROEESS QF TREATING TANK-WATERS 0F SLAUGHTER-HOUSES.

SPECIFICATION forming part of Letters "Patent No. 282,411, dated July 311, 1883. Application filed December 11, 1889.. (No model.)

To aZZ whom it may concern:

Be it known that I, BRUNO TERNE, a citizen 7 of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Treating Tank -Waters of Slaughter-Houses,&c., of which the following is a specification.

My invention relates to a process of utilizing the tank-waters of slaughter-houses, packing- IO houses, bone-boiling and other analogous establishments. The. first step consists in applying a gentle heat to such waters, so that they may not be too a rapidly decomposed while they are being dried I 5 down to the condition of solid matter in the way hereinafter described. In this first step it is desired to push the concentration of these Waste animal-liquids down to suchapoint that the. density of the fiuid may be from to Baum. As these waste tank-waters contain much animal matter, either in solution or suspension, and as the nitrogenous element contained in such animal matter is in difi'erent chemical conditions from the state of undecomposed albumen to the more fully oxidized matters in advancing decomposition, in which they are in part or in whole converted into ammonia, it is obvious in this first step of drying much of the decomposing matter will pass into the condition of gaseous ammonia in the process of evaporating and distilling the liquid matters to dryness, which ammonia is to be collected in apparatus, substantially as herein described for this purpose, for the utilization and application to all the purposes for which ammoniacal gas or solution is required. In cgrryin g out the second branch of the process I prefer to use the apparatus a vertical 7 section of which is shown in the accompanying drawing.

A retort, A, which may be of cast-iron, is mounted in brick-work K, containing a fireplace, F, and flues communicating with a chimney, c, the front end of the retort being larger than the rear. Hence the bottom of the retort isinclined downward to the front.

An elevated reservoir, D, communicates with the retort through pipes Bth1'ee in the present instance-the said pipes being furnished with suitable stop-cocks or valves.

At the rear of the retort is an outlet-pipe,

I my invention does not consist in pushing the E, which communicates with ahydraulic main, with which may also communicate the outletpipes of other retorts similar to that shown in the drawing. 1

In the rear end of the retort is a man-hole, the cover of which may be confined to its place by the usual screw-fastening. There is also at the bottom of the retort, ator near the rear end of the same, an outlet branch, H, which may be either closed by an air-tight cover or may be in direct communication with an air tight receiving-chamber. I

The concentrated tank-water above referred to is introduced into the elevated reservoir .while warm, and in a sufficiently fluid state to flow freely, and is permitted to pass into the retort through one or more of the pipes-B, as circumstances may suggest. In coming in contact with the heated surface of the retort the residual water of the concentrated tank-1iquor will be rapidly dissipated by the heat and removed from the retort, along with the free ammoniacal gas already existing in the fluid, a further portion being readily produced by the heat of the chamber. A

The'ammoniacal gas generated in the retort is condensed in the manner and by the appliances usually adopted incharring bones, horns, and other similar substances.

The concentrated tank-waters contain from twelve to fourteen per cent. of ammonia inthe form of organic nitrogen, and of this the greater portion will be converted by the above-dc scribed process into ammonia, while the residuum in the retort, containing more or less nitrogen, will be available as amanure or manure ingredient.

From the foregoing it will be perceived that application of heat in the retort so far as to convert the whole of the nitrogen of the ani mal matter into ammonia or its salts at this stage of the manufacture, but to leave abasis of potential ammonia behind in the partially 5 decomposed dry matter at the bottom of the retort. I thus economize in the cheapest and readiest way all the nitrogen of the waste tankwaters, either as actual or potential ammonia,

and this constitutes the peculiarity of my process which distinguishes it from other known methods of accomplishing the same result.

When the liquid matter in the retort has solid'condition and then passing the same into been fully dried off, and before the residual and upon the floor of aheated ret0rt,whereby dry matter becomes charred, it should be rethey are rapidly reduced or distilled to drymoved, cooled off, and sent into market, either ness, the free ammonia being collected and 5 as a manure or for addition to manure. eeonomized, and the residual partly-nitrogen- 20 Although I have illustrated and described ized animal matter being finally collected from apparatus for carrying into effect one branch the floor. of the retort to be utilized as a ferof the process, I Wish it to be understood that tilizing compound. v I do not desire to restrict myself to this appa- Intestimony whereof I have signed my name IO ratus; but 7 to this specification. in the presence of two sub- 25 I claim as my inventionscribing Witnesses.

The process of treating the tank-waters of slaughter-houses containing offal and similar Witnesses: matters, as herein described, the same consist- HARRY DRURY,

' I 5 ing in first concentrating said liquids to a semi- HARRY SMITH.

BRUNO TERNE. 

